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Renesas RD3.6FM-T1-AZ
- Part No.:
- RD3.6FM-T1-AZ
- Manufacturer:
- Renesas
- Category:
- Single Zener Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
RD3.6FM-T1-AZ.pdf
- Description:
- DIODE ZENER 2-POWER MINI MOLD
- Quantity:
- Payment:
- Shipping:
Inventory:10,432
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Product details
Overview
RD3.6FM-T1-AZ from Renesas Electronics is a 1 W planar-type Zener diode in a 2-pin power mini mold package, with a nominal Zener voltage of 3.6 V (min 3.4 V, max 3.8 V), dynamic impedance of 140 Ω at 5 mA, and reverse current ≤60 μA at 1.0 V. It operates within −55°C to +150°C junction temperature range and is rated for surge reverse power up to 400 W (10 μs pulse). It serves as a precision voltage reference and overvoltage clamp in low-power analog circuits.
For engineers reviewing the RD3.6FM-T1-AZ datasheet, RD3.6FM-T1-AZ pinout, RD3.6FM-T1-AZ application, or RD3.6FM-T1-AZ equivalent, this page delivers verified electrical parameters, thermal behavior, mounting compatibility with high-density PCB layouts, and validated alternative parts for voltage regulation and transient suppression design.
Technical Context
This Zener diode uses planar diffusion technology to achieve stable breakdown characteristics and low dynamic impedance across its operating current range. Its two-terminal structure supports unidirectional voltage clamping with cathode-indicated polarity and is optimized for DC biasing and waveform limiting under steady-state and transient conditions.
The device exhibits a negative temperature coefficient below ~5 V, confirmed by γZ = −0.04 %/°C typical at 3.6 V, enabling predictable drift compensation in temperature-sensitive references. Its thermal resistance profile (Zth ≈ 312 °C/W) and derating curve support reliable operation on standard FR-4 or ceramic substrates with defined copper area.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 3.4–3.8 V at IZ = 5 mA - defines stable regulation window for low-voltage reference circuits |
| Dynamic Impedance (ZZ) | 140 Ω max at IZ = 5 mA - limits output voltage variation under load current changes |
| Reverse Current (IR) | ≤60 μA at VR = 1.0 V - ensures minimal leakage in standby or high-impedance sensing nodes |
| Power Dissipation (P) | 1.0 W at TA = 25°C - sets maximum continuous DC power handling on standard PCBs |
| Surge Reverse Power (PRSM) | 400 W at t = 10 μs - enables robust ESD/surge absorption without degradation |
| Junction Temperature (Tj) | −55°C to +150°C - supports industrial-grade operation in enclosed or thermally constrained enclosures |
| Package | 2-pin power mini mold (4.7 × 2.5 × 1.55 mm) - enables 65% smaller footprint vs legacy 3-pin RD**P series |
Pinout & Package
RD3.6FM-T1-AZ uses a 2-pin surface-mount package with cathode indicated by a molded band. No internal terminals beyond anode and cathode; polarity must be observed during placement.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal / low-side connection | Connected to circuit ground or lower potential node in reverse-biased regulation configuration |
| Cathode | Zener breakdown terminal / high-side connection | Marked with band; connects to regulated voltage node or input rail requiring clamping |
Key Features
| Feature | Design Value |
|---|---|
| High-density mounting footprint | 4.7 × 2.5 mm outline reduces board area by ~35% vs comparable 3-pin Zeners, easing layout in space-constrained modules |
| Flat-surface mount compatibility | Two-pin planar construction eliminates height variation and solder bridging risk common in leaded alternatives |
| Stable low-voltage regulation | 3.6 V nominal Zener point with tight ±0.2 V tolerance supports accurate 3.3 V rail monitoring and biasing |
| Controlled temperature coefficient | γZ ≈ −0.04 %/°C enables predictable drift tracking in ambient-compensated references |
| Robust surge immunity | 400 W peak surge rating at 10 μs allows direct integration into I/O protection networks without external TVS staging |
Applications
| Low-Voltage Reference Generator | Microcontroller Reset Circuit |
|---|---|
|
Use Scenario: Providing stable 3.6 V reference for ADC calibration or DAC feedback in battery-powered sensors. IC Role / Device Role / Timing Role: Zener voltage reference source establishing precise analog ground-referenced threshold. Use Value: Enables <±1% full-scale accuracy in 12-bit data acquisition systems operating from 3.3 V supplies. |
Use Scenario: Generating clean reset signal for ARM Cortex-M0+ microcontrollers during power-up and brownout events. IC Role / Device Role / Timing Role: Voltage-clamped threshold detector feeding RC delay network to reset pin. Use Value: Guarantees valid reset assertion down to 2.8 V supply while suppressing noise-induced false triggers. |
| USB Port Overvoltage Clamp | Industrial Sensor Signal Limiter |
|
Use Scenario: Protecting USB 2.0 D+/D− lines against 12 V accidental misconnection in field-deployed peripherals. IC Role / Device Role / Timing Role: Bidirectional clamping element (paired anode-cathode) shunting excess energy to GND/VBUS. Use Value: Limits line voltage to ≤3.8 V during fault, preserving transceiver integrity without adding series resistance. |
Use Scenario: Capping 4–20 mA loop transmitter output at 3.6 V to prevent op-amp saturation in 3.3 V signal conditioning stages. IC Role / Device Role / Timing Role: Fast-acting waveform clipper placed at amplifier output before ADC input. Use Value: Prevents ADC overflow and digital wraparound errors while maintaining sub-μs response to transients. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener voltage regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX84-C3V6 (Nexperia) | 325 mW SOT-23 package; 3.6 V ±5%; ZZ = 90 Ω @ 5 mA | Lower power rating limits use in >100 mA bias networks; better suited for signal-level clamping | Select when board space is critical and thermal budget permits derated operation |
| MMBZ5227B (ON Semiconductor) | 350 mW SOT-23; 3.6 V ±5%; ZZ = 130 Ω @ 20 mA | Higher test current shifts regulation point; requires larger bias resistor for same Zener current | Choose where existing BOM already includes MMBZ52xx family and thermal margin exceeds 0.5 W |
Compared with RD3.6FM-T1-AZ, BZX84-C3V6 offers smaller size but sacrifices 65% power handling and surge capability, while MMBZ5227B trades off tighter voltage consistency at 5 mA for higher test-current dependency-making RD3.6FM-T1-AZ preferable for 1 W-stable reference and industrial transient suppression.
Availability
RD3.6FM-T1-AZ is available at Aetrix Electronics and suitable for industrial sensor interfaces, microcontroller reset circuits, and USB port protection requiring stable component supply and long-term obsolescence management.
Supply support for RD3.6FM-T1-AZ includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Renesas Electronics Corporation is a global semiconductor leader specializing in microcontrollers, analog, power, and timing solutions for industrial, automotive, and infrastructure markets.
RD3.6FM-T1-AZ belongs to the RDx.xFM Zener diode family designed for high-reliability voltage regulation and surge suppression in standard-grade industrial equipment, emphasizing thermal stability and mounting efficiency.
FAQ
What is the Zener voltage tolerance of RD3.6FM-T1-AZ?
The RD3.6FM-T1-AZ has a Zener voltage range of 3.4 V to 3.8 V at 5 mA test current, corresponding to a ±0.2 V absolute tolerance. This is specified per the "Class B" classification in the Renesas datasheet D16083EJ2V0DS, and reflects guaranteed performance across manufacturing lots and temperature extremes.
Can RD3.6FM-T1-AZ replace RD3.6FM in existing designs?
Yes, RD3.6FM-T1-AZ is a tape-and-reel variant of RD3.6FM with identical electrical specifications, package dimensions, and thermal characteristics. The "-T1-AZ" suffix denotes packaging format (T1 = 1 kpc reel, AZ = RoHS-compliant finish); no circuit or layout changes are required when substituting RD3.6FM-T1-AZ for RD3.6FM.
What is the maximum continuous forward current for RD3.6FM-T1-AZ?
The absolute maximum forward current for RD3.6FM-T1-AZ is 200 mA at TA = 25°C, as stated in the Absolute Maximum Ratings table. However, sustained forward conduction is not a functional mode-this rating supports surge survivability during reverse-polarity transients, not DC forward bias operation.
How does RD3.6FM-T1-AZ behave under pulsed surge conditions?
RD3.6FM-T1-AZ supports 400 W surge reverse power for 10 μs pulses (PRSM), with derating per Figure 6 in the datasheet. At 100 μs pulse width, rated surge power drops to ~100 W. This enables single-device transient suppression for IEC 61000-4-5 Level 3 surges when properly heatsinked on ≥1 cm² copper.
Is RD3.6FM-T1-AZ suitable for automotive applications?
No-RD3.6FM-T1-AZ is classified as a "Standard" quality grade device per Renesas documentation, intended for computers, office equipment, and industrial robots. It is not qualified for automotive use (AEC-Q101), lacks PPAP documentation, and does not meet extended temperature or vibration requirements for vehicle ECUs.
RD3.6FM-T1-AZ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- DO-214AC, SMA
- Packaging:
- Bulk
- Product Status:
- Obsolete
- Voltage - Zener (Nom) (Vz):
- -
- Tolerance:
- -
- Power - Max:
- -
- Impedance (Max) (Zzt):
- -
- Current - Reverse Leakage @ Vr:
- -
- Voltage - Forward (Vf) (Max) @ If:
- -
- Operating Temperature:
- 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 2-Power Mini Mold
RD3.6FM-T1-AZ FAQ
1.How can I place an order for RD3.6FM-T1-AZ through Aetrix?
Please submit a Request for Quotation (RFQ) for RD3.6FM-T1-AZ on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for RD3.6FM-T1-AZ reliable?
The price and inventory of RD3.6FM-T1-AZ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for RD3.6FM-T1-AZ is usually 5 days.
3.What payment methods are accepted for RD3.6FM-T1-AZ?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for RD3.6FM-T1-AZ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for RD3.6FM-T1-AZ?
RD3.6FM-T1-AZ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your RD3.6FM-T1-AZ order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for RD3.6FM-T1-AZ?
For technical support, including RD3.6FM-T1-AZ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your RD3.6FM-T1-AZ requirements.
6.How does Aetrix verify that RD3.6FM-T1-AZ is sourced from the original manufacturer or authorized distributors?
All RD3.6FM-T1-AZ products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that RD3.6FM-T1-AZ meets industry standards.
7.What is the process for return or replacement of RD3.6FM-T1-AZ?
All RD3.6FM-T1-AZ units undergo pre-shipment inspection (PSI). If there is an issue with RD3.6FM-T1-AZ, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The RD3.6FM-T1-AZ part is unused and in its original packaging.
Return procedure for RD3.6FM-T1-AZ:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
RD3.6FM-T1-AZ Tags
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MMSZ5231B-7-F
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MM5Z5V1ST1G
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